394149326339 has 2 divisors, whose sum is σ = 394149326340. Its totient is φ = 394149326338.

The previous prime is 394149326309. The next prime is 394149326371. The reversal of 394149326339 is 933623941493.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 394149326339 - 2³⁶ = 325429849603 is a prime.

It is not a weakly prime, because it can be changed into another prime (394149326309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197074663169 + 197074663170.

It is an arithmetic number, because the mean of its divisors is an integer number (197074663170).

Almost surely, 2^394149326339 is an apocalyptic number.

394149326339 is a deficient number, since it is larger than the sum of its proper divisors (1).

394149326339 is an equidigital number, since it uses as much as digits as its factorization.

394149326339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11337408, while the sum is 56.

The spelling of 394149326339 in words is "three hundred ninety-four billion, one hundred forty-nine million, three hundred twenty-six thousand, three hundred thirty-nine".